main.c

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/*
 * Copyright (c) 2011 Vojtech Horky
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *
 * - Redistributions of source code must retain the above copyright
 *   notice, this list of conditions and the following disclaimer.
 * - Redistributions in binary form must reproduce the above copyright
 *   notice, this list of conditions and the following disclaimer in the
 *   documentation and/or other materials provided with the distribution.
 * - The name of the author may not be used to endorse or promote products
 *   derived from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */

#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <errno.h>
#include <str_error.h>

#include <usb/usb.h>
#include <usb/descriptor.h>
#include <usb/debug.h>
#include <usb/classes/classes.h>
#include <usb/hid/hid.h>
#include <usbvirt/device.h>

#include "virthid.h"
#include "ifaces.h"
#include "stdreq.h"

static usbvirt_control_request_handler_t endpoint_zero_handlers[] = {
        {
                .req_direction = USB_DIRECTION_IN,
                .req_type = USB_REQUEST_TYPE_STANDARD,
                .req_recipient = USB_REQUEST_RECIPIENT_INTERFACE,
                .request = USB_DEVREQ_GET_DESCRIPTOR,
                .name = "Get_Descriptor",
                .callback = req_get_descriptor
        },
        {
                .req_direction = USB_DIRECTION_OUT,
                .req_recipient = USB_REQUEST_RECIPIENT_INTERFACE,
                .req_type = USB_REQUEST_TYPE_CLASS,
                .request = USB_HIDREQ_SET_PROTOCOL,
                .name = "Set_Protocol",
                .callback = req_set_protocol
        },
        {
                .req_direction = USB_DIRECTION_OUT,
                .req_recipient = USB_REQUEST_RECIPIENT_INTERFACE,
                .req_type = USB_REQUEST_TYPE_CLASS,
                .request = USB_HIDREQ_SET_REPORT,
                .name = "Set_Report",
                .callback = req_set_report
        },
        {
                .callback = NULL
        }
};

static usbvirt_device_ops_t hid_ops = {
        .control = endpoint_zero_handlers,
};

static usb_standard_configuration_descriptor_t std_configuration_descriptor = {
        .length = sizeof(usb_standard_configuration_descriptor_t),
        .descriptor_type = USB_DESCTYPE_CONFIGURATION,
        /* Will be patched at runtime. */
        .total_length = sizeof(usb_standard_configuration_descriptor_t),
        .interface_count = 0,
        .configuration_number = 1,
        .str_configuration = 0,
        .attributes = 128, /* denotes bus-powered device */
        .max_power = 50
};

static usb_standard_device_descriptor_t std_device_descriptor = {
        .length = sizeof(usb_standard_device_descriptor_t),
        .descriptor_type = USB_DESCTYPE_DEVICE,
        .usb_spec_version = 0x110,
        .device_class = USB_CLASS_USE_INTERFACE,
        .device_subclass = 0,
        .device_protocol = 0,
        .max_packet_size = 64,
        .configuration_count = 1
};

usbvirt_device_configuration_t configuration = {
        .descriptor = &std_configuration_descriptor,
        .extra = NULL,
        .extra_count = 0
};

usbvirt_descriptors_t descriptors = {
        .device = &std_device_descriptor,
        .configuration = &configuration,
        .configuration_count = 1,
};

static vuhid_data_t vuhid_data = {
        .in_endpoints_mapping = { NULL },
        .in_endpoint_first_free = 1,
        .out_endpoints_mapping = { NULL },
        .out_endpoint_first_free = 1,

        .iface_count = 0,
        .iface_died_count = 0
        // mutex and CV must be initialized elsewhere
};


static usbvirt_device_t hid_dev = {
        .ops = &hid_ops,
        .descriptors = &descriptors,
        .name = "HID",
        .device_data = &vuhid_data
};


int main(int argc, char * argv[])
{
        int rc;

        usb_log_enable(USB_LOG_LEVEL_DEBUG2, "vusbhid");

        fibril_mutex_initialize(&vuhid_data.iface_count_mutex);
        fibril_condvar_initialize(&vuhid_data.iface_count_cv);

        /* Determine which interfaces to initialize. */
        int i;
        for (i = 1; i < argc; i++) {
                rc = add_interface_by_id(available_hid_interfaces, argv[i],
                    &hid_dev);
                if (rc != EOK) {
                        fprintf(stderr, "Failed to add device `%s': %s.\n",
                            argv[i], str_error(rc));
                } else {
                        printf("Added device `%s'.\n", argv[i]);
                }
        }

        for (i = 0; i < (int) hid_dev.descriptors->configuration->extra_count; i++) {
                usb_log_debug("Found extra descriptor: %s.\n",
                    usb_debug_str_buffer(
                        hid_dev.descriptors->configuration->extra[i].data,
                        hid_dev.descriptors->configuration->extra[i].length,
                        0));
        }

        rc = usbvirt_device_plug(&hid_dev, "/virt/usbhc/hc");
        if (rc != EOK) {
                printf("Unable to start communication with VHCD: %s.\n",
                    str_error(rc));
                return rc;
        }
        
        printf("Connected to VHCD...\n");

        wait_for_interfaces_death(&hid_dev);
        
        printf("Terminating...\n");
        
        usbvirt_device_unplug(&hid_dev);

        return 0;
}

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